The document describes an experiment to create two classes - one with methods to calculate the area and perimeter of a triangle, and another class to initialize an instance of the first class and call its methods. The first class contains area() and perimeter() methods that use input values to calculate and output the area and perimeter. The second class initializes an instance of the first class in its main method, takes user input for values, and calls the area() and perimeter() methods to output the results.

1. Experiment
Objective: Create a class with two methods for calculating area &
parameter of triangle. Create another class and initialize the instance of
the former class and calculate the area & perimeter.
Code :-
import java.util.*;
class Main
{ public void area(int a, int b)
{ int d; d= (b*a)/2;
System.out.println("Area of Triangle is: "+d);
}
public void perimeter(int p, int q, int s)
{
int r; r=p+q+s;
System.out.println("perimeter of Triangle is: "+r);
}
}
class b
{
public static void main(String[] args)
{

2. int c,k,l,m,n;
Scanner sc=new Scanner(System.in);
System.out.println("enter values for area");
c=sc.nextInt();
k=sc.nextInt();
System.out.println("enter values for perimeter");
l=sc.nextInt();
m=sc.nextInt();
n=sc.nextInt();
Main h = new Main();
h.area(c,k);
h.perimeter(l,m,n);
}
}
Output :-